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Performance Study of Carbon Coating on Si/Graphite Composites for Lithium Ion Battery Anode Materials

碳材被覆於矽/石墨複合物應用於鋰離子電池負極材料之研究

摘要


本研究採用矽與石墨埋入經由熱裂解的所形成的非結晶碳中,以複合物的形式來做爲鋰離子二次電子的負極材料,酚醛樹脂經由1300℃的高溫熱裂解之後形成非結晶碳,此非結晶碳能有效的結合矽與石墨,並且能形成緩衝層穩定矽與石墨所形成的複合物結構,研究結果顯示高含量的酚醛樹脂能有效改善電池的不可逆性,含有45 wt%酚醛樹脂、45 wt%天然石墨、10 wt%矽粉末的複合物負極材料,電池電容量可維持在443 mAh/g,並且展現良好的庫倫效率。

並列摘要


The composites which contain silicon and natural graphite embedded in pyrolyzed carbon have been synthesized and investigated as anode material for lithium ion secondary batteries. Carbon coated onto silicon/graphite composites by using a pyrolysis reaction of phenolic resin at 1300℃. The pyrolyzed carbon was used as a buffer material and binder for silicon/graphite composites. As a result, the irreversibility and capacity decay were obviously improved with increasing amount of phenolic resin. A composite containing 45wt% phenolic resin, 45wt% graphite and 10wt% silicon exhibited a stable capacity of 443 mAh/g and better cycling performance.

被引用紀錄


廖廷嘉(2016)。添加回收矽粉於碳/碳複合材料應用於鋰離子電池負極材料之研究〔碩士論文,逢甲大學〕。華藝線上圖書館。https://doi.org/10.6341/fcu.M0327611

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